-/*
-** OSSP ex - Exception Handling (modified to fit into SimGrid)
-** Copyright (c) 2005 Martin Quinson.
-** Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com>
-** Copyright (c) 2002-2004 The OSSP Project <http://www.ossp.org/>
-** Copyright (c) 2002-2004 Cable & Wireless <http://www.cw.com/>
-**
-** This file is part of OSSP ex, an exception handling library
-** which can be found at http://www.ossp.org/pkg/lib/ex/.
-**
-** Permission to use, copy, modify, and distribute this software for
-** any purpose with or without fee is hereby granted, provided that
-** the above copyright notice and this permission notice appear in all
-** copies.
-**
-** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
-** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
-** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
-** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-** SUCH DAMAGE.
-**
-** ex.h: exception handling (pre-processor part)
-*/
+/* Copyright (c) 2005-2019. The SimGrid Team. All rights reserved. */
-#ifndef __XBT_EX_H__
-#define __XBT_EX_H__
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
-#include <xbt/sysdep.h>
-#include <xbt/misc.h>
-
-/* do not include execinfo.h directly since it's not always available.
- Instead, copy the parts we need (and fake when it's not there) */
-extern int backtrace (void **__array, int __size);
-
-/* required ISO-C standard facilities */
-#include <errno.h>
-#include <stdio.h>
+#ifndef XBT_EX_H
+#define XBT_EX_H
-/* the machine context */
-#if defined(__EX_MCTX_MCSC__)
-#include <ucontext.h> /* POSIX.1 ucontext(3) */
-#define __ex_mctx_struct ucontext_t uc;
-#define __ex_mctx_save(mctx) (getcontext(&(mctx)->uc) == 0)
-#define __ex_mctx_restored(mctx) /* noop */
-#define __ex_mctx_restore(mctx) (void)setcontext(&(mctx)->uc)
+#include <stdlib.h>
-#elif defined(__EX_MCTX_SSJLJ__)
-#include <setjmp.h> /* POSIX.1 sigjmp_buf(3) */
-#define __ex_mctx_struct sigjmp_buf jb;
-#define __ex_mctx_save(mctx) (sigsetjmp((mctx)->jb, 1) == 0)
-#define __ex_mctx_restored(mctx) /* noop */
-#define __ex_mctx_restore(mctx) (void)siglongjmp((mctx)->jb, 1)
-
-#elif defined(__EX_MCTX_SJLJ__) || !defined(__EX_MCTX_CUSTOM__)
-#include <setjmp.h> /* ISO-C jmp_buf(3) */
-#define __ex_mctx_struct jmp_buf jb;
-#define __ex_mctx_save(mctx) (setjmp((mctx)->jb) == 0)
-#define __ex_mctx_restored(mctx) /* noop */
-#define __ex_mctx_restore(mctx) (void)longjmp((mctx)->jb, 1)
-#endif
+#include <xbt/base.h>
+#include <xbt/misc.h>
+#include <xbt/sysdep.h>
+#include <xbt/virtu.h>
-/* declare the machine context type */
-typedef struct { __ex_mctx_struct } __ex_mctx_t;
-
-/** @addtogroup XBT_ex
- * @brief A set of macros providing exception a la C++ in ANSI C (grounding feature)
- *
- * This module is a small ISO-C++ style exception handling library
- * for use in the ISO-C language. It allows you to use the paradigm
- * of throwing and catching exceptions in order to reduce the amount
- * of error handling code without hindering program robustness.
- *
- * This is achieved by directly transferring exceptional return codes
- * (and the program control flow) from the location where the exception
- * is raised (throw point) to the location where it is handled (catch
- * point) -- usually from a deeply nested sub-routine to a parent
- * routine. All intermediate routines no longer have to make sure that
- * the exceptional return codes from sub-routines are correctly passed
- * back to the parent.
- *
- * These features are brought to you by a modified version of the libex
- * library, one of the numerous masterpiece of Ralf S. Engelschall.
- *
- * \htmlonly <div class="toc">\endhtmlonly
- *
- * @section XBT_ex_toc TABLE OF CONTENTS
- *
- * - \ref XBT_ex_intro
- * - \ref XBT_ex_base
- * - \ref XBT_ex_pitfalls
- *
- * \htmlonly </div> \endhtmlonly
- *
- * @section XBT_ex_intro DESCRIPTION
- *
- * In SimGrid, an exception is a triple <\a msg , \a category , \a value>
- * where \a msg is a human-readable text describing the exceptional
- * condition, \a code an integer describing what went wrong and \a value
- * providing a sort of sub-category. (this is different in the original libex).
- *
- * @section XBT_ex_base BASIC USAGE
- *
- * \em TRY \b TRIED_BLOCK [\em CLEANUP \b CLEANUP_BLOCK] \em CATCH (variable) \b CATCH_BLOCK
+/** @addtogroup XBT_ex_c
+ * @brief Exceptions support (C)
*
- * This is the primary syntactical construct provided. It is modeled after the
- * ISO-C++ try-catch clause and should sound familiar to most of you.
- *
- * Any exception thrown directly from the TRIED_BLOCK block or from called
- * subroutines is caught. Cleanups which must be done after this block
- * (whenever an exception arised or not) should be placed into the optionnal
- * CLEANUP_BLOCK. The code dealing with the exceptions when they arise should
- * be placed into the (mandatory) CATCH_BLOCK.
- *
- *
- * In absence of exception, the control flow goes into the blocks TRIED_BLOCK
- * and CLEANUP_BLOCK (if present); The CATCH_BLOCK block is then ignored.
- *
- * When an exception is thrown, the control flow goes through the following
- * blocks: TRIED_BLOCK (up to the statement throwing the exception),
- * CLEANUP_BLOCK (if any) and CATCH_BLOCK. The exception is stored in a
- * variable for inspection inside the CATCH_BLOCK. This variable must be
- * declared in the outter scope, but its value is only valid within the
- * CATCH_BLOCK block.
- *
- * Some notes:
- * - TRY, CLEANUP and CATCH cannot be used separately, they work
- * only in combination and form a language clause as a whole.
- * - In contrast to the syntax of other languages (such as C++ or Jave) there
- * is only one CATCH block and not multiple ones (all exceptions are
- * of the same \em xbt_ex_t C type).
- * - the variable of CATCH can naturally be reused in subsequent
- * CATCH clauses.
- * - it is possible to nest TRY clauses.
- *
- * The TRY block is a regular ISO-C language statement block, but it is not
- * allowed to jump into it via "goto" or longjmp(3) or out of it via "break",
- * "return", "goto" or longjmp(3) because there is some hidden setup and
- * cleanup that needs to be done regardless of whether an exception is
- * caught. Bypassing these steps will break the exception handling facility.
- *
- * The CLEANUP and CATCH blocks are regular ISO-C language statement
- * blocks without any restrictions. You are even allowed to throw (and, in the
- * CATCH block, to re-throw) exceptions.
- *
- * There is one subtle detail you should remember about TRY blocks:
- * Variables used in the CLEANUP or CATCH clauses must be declared with
- * the storage class "volatile", otherwise they might contain outdated
- * information if an exception it thrown.
- *
- *
- * This is because you usually do not know which commands in the TRY
- * were already successful before the exception was thrown (logically speaking)
- * and because the underlying ISO-C setjmp(3) facility applies those
- * restrictions (technically speaking). As a matter of fact, value changes
- * between the TRY and the THROW may be discarded if you forget the
- * "volatile" keyword.
- *
- * \section XBT_ex_pitfalls PROGRAMMING PITFALLS
- *
- * Exception handling is a very elegant and efficient way of dealing with
- * exceptional situation. Nevertheless it requires additional discipline in
- * programming and there are a few pitfalls one must be aware of. Look the
- * following code which shows some pitfalls and contains many errors (assuming
- * a mallocex() function which throws an exception if malloc(3) fails):
- *
- * \dontinclude ex.c
- * \skip BAD_EXAMPLE
- * \until end_of_bad_example
- *
- * This example raises a few issues:
- * -# \b variable \b scope \n
- * Variables which are used in the CLEANUP or CATCH clauses must be
- * declared before the TRY clause, otherwise they only exist inside the
- * TRY block. In the example above, cp1, cp2 and cp3 only exist in the
- * TRY block and are invisible from the CLEANUP and CATCH
- * blocks.
- * -# \b variable \b initialization \n
- * Variables which are used in the CLEANUP or CATCH clauses must
- * be initialized before the point of the first possible THROW is
- * reached. In the example above, CLEANUP would have trouble using cp3
- * if mallocex() throws a exception when allocating a TOOBIG buffer.
- * -# \b volatile \b variable \n
- * Variables which are used in the CLEANUP or CATCH clauses MUST BE
- * DECLARED AS "volatile", otherwise they might contain outdated
- * information when an exception is thrown.
- * -# \b clean \b before \b catch \n
- * The CLEANUP clause is not only place before the CATCH clause in
- * the source code, it also occures before in the control flow. So,
- * resources being cleaned up cannot be used in the CATCH block. In the
- * example, c3 gets freed before the printf placed in CATCH.
- * -# \b variable \b uninitialization \n
- * If resources are passed out of the scope of the
- * TRY/CLEANUP/CATCH construct, they naturally shouldn't get
- * cleaned up. The example above does free(3) cp1 in CLEANUP although
- * its value was affected to globalcontext->first, invalidating this
- * pointer.
+ * Those fonctions are used to throw C++ exceptions from C code. This feature
+ * should probably be removed in the future because C and exception do not
+ * exactly play nicely together.
+ */
- * The following is fixed version of the code (annotated with the pitfall items
- * for reference):
+/** Categories of errors
*
- * \skip GOOD_EXAMPLE
- * \until end_of_good_example
+ * This very similar to std::error_catgory and should probably be replaced
+ * by this in the future.
*
- * @{
+ * @ingroup XBT_ex_c
*/
-
-/** @brief different kind of errors */
typedef enum {
- unknown_error=0, /**< unknown error */
- arg_error, /**< Invalid argument */
- mismatch_error, /**< The provided ID does not match */
- not_found_error, /**< The searched element was not found */
-
- system_error, /**< a syscall did fail */
- network_error, /**< error while sending/receiving data */
- timeout_error, /**< not quick enough, dude */
- thread_error /**< error while [un]locking */
+ unknown_error = 0, /**< unknown error */
+ arg_error, /**< Invalid argument */
+ bound_error, /**< Out of bounds argument */
+ mismatch_error, /**< The provided ID does not match */
+ not_found_error, /**< The searched element was not found */
+ system_error, /**< a syscall did fail */
+ network_error, /**< error while sending/receiving data */
+ timeout_error, /**< not quick enough, dude */
+ cancel_error, /**< an action was canceled */
+ thread_error, /**< error while [un]locking */
+ host_error, /**< host failed */
+ tracing_error, /**< error during the simulation tracing */
+ io_error, /**< disk or file error */
+ vm_error /**< vm error */
} xbt_errcat_t;
-const char * xbt_ex_catname(xbt_errcat_t cat);
-
-/** @brief Structure describing an exception */
-typedef struct {
- char *msg; /**< human readable message; to be freed */
- xbt_errcat_t category; /**< category like HTTP (what went wrong) */
- int value; /**< like errno (why did it went wrong) */
- /* throw point */
- short remote; /* whether it was raised remotely */
- char *host; /* NULL for localhost; hostname if remote */
- /* FIXME: host should be hostname:port[#thread] */
- char *procname;
- char *file; /**< to be freed only for remote exceptions */
- int line;
- char *func; /**< to be freed only for remote exceptions */
- /* Backtrace */
- int used;
- char **bt_strings; /* only filed on display (or before the network propagation) */
- void *bt[XBT_BACKTRACE_SIZE];
-} xbt_ex_t;
-
-/* declare the context type (private) */
-typedef struct {
- __ex_mctx_t *ctx_mctx; /* permanent machine context of enclosing try/catch */
- volatile int ctx_caught; /* temporary flag whether exception was caught */
- volatile xbt_ex_t ctx_ex; /* temporary exception storage */
-} ex_ctx_t;
+SG_BEGIN_DECL()
-/* the static and dynamic initializers for a context structure */
-#define XBT_CTX_INITIALIZER \
- { NULL, 0, { /* content */ NULL, unknown_error, 0, \
- /* throw point*/ 0,NULL, NULL, NULL, 0, NULL,\
- /* backtrace */ 0,NULL,{NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL} } }
-#define XBT_CTX_INITIALIZE(ctx) \
- do { \
- (ctx)->ctx_mctx = NULL; \
- (ctx)->ctx_caught = 0; \
- (ctx)->ctx_ex.msg = NULL; \
- (ctx)->ctx_ex.category = 0; \
- (ctx)->ctx_ex.value = 0; \
- (ctx)->ctx_ex.remote = 0; \
- (ctx)->ctx_ex.host = NULL; \
- (ctx)->ctx_ex.procname = NULL; \
- (ctx)->ctx_ex.file = NULL; \
- (ctx)->ctx_ex.line = 0; \
- (ctx)->ctx_ex.func = NULL; \
- (ctx)->ctx_ex.bt[0] = NULL; \
- (ctx)->ctx_ex.bt[1] = NULL; \
- (ctx)->ctx_ex.bt[2] = NULL; \
- (ctx)->ctx_ex.bt[3] = NULL; \
- (ctx)->ctx_ex.bt[4] = NULL; \
- (ctx)->ctx_ex.bt[5] = NULL; \
- (ctx)->ctx_ex.bt[6] = NULL; \
- (ctx)->ctx_ex.bt[7] = NULL; \
- (ctx)->ctx_ex.bt[8] = NULL; \
- (ctx)->ctx_ex.bt[9] = NULL; \
- (ctx)->ctx_ex.used = 0; \
- (ctx)->ctx_ex.bt_strings = NULL; \
- } while (0)
-
-/* the exception context */
-typedef ex_ctx_t *(*ex_ctx_cb_t)(void);
-extern ex_ctx_cb_t __xbt_ex_ctx;
-extern ex_ctx_t *__xbt_ex_ctx_default(void);
-
-/* the termination handler */
-typedef void (*ex_term_cb_t)(xbt_ex_t *);
-extern ex_term_cb_t __xbt_ex_terminate;
-extern void __xbt_ex_terminate_default(xbt_ex_t *e);
-
-/** @brief Introduce a block where exception may be dealed with
- * @hideinitializer
+/** Get the name of a category
+ * @ingroup XBT_ex_c
*/
-#define TRY \
- { \
- ex_ctx_t *__xbt_ex_ctx_ptr = __xbt_ex_ctx(); \
- int __ex_cleanup = 0; \
- __ex_mctx_t *__ex_mctx_en; \
- __ex_mctx_t __ex_mctx_me; \
- __ex_mctx_en = __xbt_ex_ctx_ptr->ctx_mctx; \
- __xbt_ex_ctx_ptr->ctx_mctx = &__ex_mctx_me; \
- if (__ex_mctx_save(&__ex_mctx_me)) { \
- if (1)
+XBT_PUBLIC const char* xbt_ex_catname(xbt_errcat_t cat);
-/** @brief optional(!) block for cleanup
- * @hideinitializer
- */
-#define CLEANUP \
- else { \
- } \
- __xbt_ex_ctx_ptr->ctx_caught = 0; \
- } else { \
- __ex_mctx_restored(&__ex_mctx_me); \
- __xbt_ex_ctx_ptr->ctx_caught = 1; \
- } \
- __xbt_ex_ctx_ptr->ctx_mctx = __ex_mctx_en; \
- __ex_cleanup = 1; \
- if (1) { \
- if (1)
+/** Helper function used to throw exceptions in C */
+XBT_ATTRIB_NORETURN XBT_PUBLIC void _xbt_throw(char* message, xbt_errcat_t errcat, int value, const char* file,
+ int line, const char* func);
-#ifndef DOXYGEN_SKIP
-# ifdef __cplusplus
-# define XBT_EX_T_CPLUSPLUSCAST (xbt_ex_t&)
-# else
-# define XBT_EX_T_CPLUSPLUSCAST
-# endif
-#endif
-
-/** @brief the block for catching (ie, deal with) an exception
+/** Builds and throws an exception
+ * @ingroup XBT_ex_c
* @hideinitializer
*/
-#define CATCH(e) \
- else { \
- } \
- if (!(__ex_cleanup)) \
- __xbt_ex_ctx_ptr->ctx_caught = 0; \
- } else { \
- if (!(__ex_cleanup)) { \
- __ex_mctx_restored(&__ex_mctx_me); \
- __xbt_ex_ctx_ptr->ctx_caught = 1; \
- } \
- } \
- __xbt_ex_ctx_ptr->ctx_mctx = __ex_mctx_en; \
- } \
- if ( !(__xbt_ex_ctx()->ctx_caught) \
- || ((e) = XBT_EX_T_CPLUSPLUSCAST __xbt_ex_ctx()->ctx_ex, 0)) { \
- } \
- else
-
-#define DO_THROW(e) \
- /* deal with the exception */ \
- if (__xbt_ex_ctx()->ctx_mctx == NULL) \
- __xbt_ex_terminate((xbt_ex_t *)&(e)); /* not catched */\
- else \
- __ex_mctx_restore(__xbt_ex_ctx()->ctx_mctx); /* catched somewhere */ \
- abort()/* nope, stupid GCC, we won't survive a THROW (this won't be reached) */
+#define THROW(c, v) { _xbt_throw(NULL, (xbt_errcat_t) c, v, __FILE__, __LINE__, __func__); }
-/** @brief Helper macro for THROWS0-6
+/** Builds and throws an exception with a printf-like formatted message
+ * @ingroup XBT_ex_c
* @hideinitializer
- *
- * @param c: category code (integer)
- * @param v: value (integer)
- * @param m: message text
- *
- * If called from within a TRY/CATCH construct, this exception
- * is copied into the CATCH relevant variable program control flow
- * is derouted to the CATCH (after the optional sg_cleanup).
- *
- * If no TRY/CATCH construct embeeds this call, the program calls
- * abort(3).
- *
- * The THROW can be performed everywhere, including inside TRY,
- * CLEANUP and CATCH blocks.
*/
+#define THROWF(c, v, ...) _xbt_throw(bprintf(__VA_ARGS__), (xbt_errcat_t) c, v, __FILE__, __LINE__, __func__)
-#define _THROW(c,v,m) \
- do { /* change this sequence into one block */ \
- /* build the exception */ \
- __xbt_ex_ctx()->ctx_ex.msg = (m); \
- __xbt_ex_ctx()->ctx_ex.category = (xbt_errcat_t)(c); \
- __xbt_ex_ctx()->ctx_ex.value = (v); \
- __xbt_ex_ctx()->ctx_ex.remote = 0; \
- __xbt_ex_ctx()->ctx_ex.host = (char*)NULL; \
- __xbt_ex_ctx()->ctx_ex.procname = strdup(xbt_procname()); \
- __xbt_ex_ctx()->ctx_ex.file = (char*)__FILE__; \
- __xbt_ex_ctx()->ctx_ex.line = __LINE__; \
- __xbt_ex_ctx()->ctx_ex.func = (char*)_XBT_FUNCTION; \
- __xbt_ex_ctx()->ctx_ex.used = backtrace((void**)__xbt_ex_ctx()->ctx_ex.bt,XBT_BACKTRACE_SIZE);\
- DO_THROW(__xbt_ex_ctx()->ctx_ex);\
- } while (0)
-
-/** @brief Builds and throws an exception with a string taking no arguments
- @hideinitializer */
-#define THROW0(c,v,m) _THROW(c,v,(m?bprintf(m):NULL))
-/** @brief Builds and throws an exception with a string taking one argument
- @hideinitializer */
-#define THROW1(c,v,m,a1) _THROW(c,v,bprintf(m,a1))
-/** @brief Builds and throws an exception with a string taking two arguments
- @hideinitializer */
-#define THROW2(c,v,m,a1,a2) _THROW(c,v,bprintf(m,a1,a2))
-/** @brief Builds and throws an exception with a string taking three arguments
- @hideinitializer */
-#define THROW3(c,v,m,a1,a2,a3) _THROW(c,v,bprintf(m,a1,a2,a3))
-/** @brief Builds and throws an exception with a string taking four arguments
- @hideinitializer */
-#define THROW4(c,v,m,a1,a2,a3,a4) _THROW(c,v,bprintf(m,a1,a2,a3,a4))
-/** @brief Builds and throws an exception with a string taking five arguments
- @hideinitializer */
-#define THROW5(c,v,m,a1,a2,a3,a4,a5) _THROW(c,v,bprintf(m,a1,a2,a3,a4,a5))
-/** @brief Builds and throws an exception with a string taking six arguments
- @hideinitializer */
-#define THROW6(c,v,m,a1,a2,a3,a4,a5,a6) _THROW(c,v,bprintf(m,a1,a2,a3,a4,a5,a6))
-
-#define THROW_IMPOSSIBLE THROW0(unknown_error,0,"The Impossible Did Happen (yet again)")
-#define THROW_UNIMPLEMENTED THROW1(unknown_error,0,"Function %s unimplemented",__FUNCTION__)
-
-#ifndef NDEBUG
-# define DIE_IMPOSSIBLE xbt_assert0(0,"The Impossible Did Happen (yet again)")
-#else
-# define DIE_IMPOSSIBLE exit(1);
-#endif
-
-/** @brief re-throwing of an already caught exception (ie, pass it to the upper catch block)
- * @hideinitializer
+XBT_ATTRIB_NORETURN void xbt_throw_impossible(const char* file, int line, const char* func);
+/** Throw an exception because something impossible happened
+ * @ingroup XBT_ex_c
*/
-#define RETHROW \
- do { \
- if (__xbt_ex_ctx()->ctx_mctx == NULL) \
- __xbt_ex_terminate((xbt_ex_t *)&(__xbt_ex_ctx()->ctx_ex)); \
- else \
- __ex_mctx_restore(__xbt_ex_ctx()->ctx_mctx); \
- abort();\
- } while(0)
-
+#define THROW_IMPOSSIBLE xbt_throw_impossible(__FILE__, __LINE__, __func__)
-#ifndef DOXYGEN_SKIP
-#define _XBT_PRE_RETHROW \
- do { \
- char *_xbt_ex_internal_msg = __xbt_ex_ctx()->ctx_ex.msg; \
- __xbt_ex_ctx()->ctx_ex.msg = bprintf(
-#define _XBT_POST_RETHROW \
- _xbt_ex_internal_msg); \
- free(_xbt_ex_internal_msg); \
- RETHROW; \
- } while (0)
-#endif
-
-/** @brief like THROW0, but adding some details to the message of an existing exception
- * @hideinitializer
- */
-#define RETHROW0(msg) _XBT_PRE_RETHROW msg, _XBT_POST_RETHROW
-/** @brief like THROW1, but adding some details to the message of an existing exception
- * @hideinitializer
- */
-#define RETHROW1(msg,a) _XBT_PRE_RETHROW msg,a, _XBT_POST_RETHROW
-/** @brief like THROW2, but adding some details to the message of an existing exception
- * @hideinitializer
+/** Throw an exception because something unimplemented stuff has been attempted
+ * @ingroup XBT_ex_c
*/
-#define RETHROW2(msg,a,b) _XBT_PRE_RETHROW msg,a,b, _XBT_POST_RETHROW
-/** @brief like THROW3, but adding some details to the message of an existing exception
- * @hideinitializer
- */
-#define RETHROW3(msg,a,b,c) _XBT_PRE_RETHROW msg,a,b,c, _XBT_POST_RETHROW
-/** @brief like THROW4, but adding some details to the message of an existing exception
- * @hideinitializer
- */
-#define RETHROW4(msg,a,b,c,d) _XBT_PRE_RETHROW msg,a,b,c, _XBT_POST_RETHROW
-/** @brief like THROW5, but adding some details to the message of an existing exception
- * @hideinitializer
- */
-#define RETHROW5(msg,a,b,c,d,e) _XBT_PRE_RETHROW msg,a,b,c,d,e _XBT_POST_RETHROW
+XBT_ATTRIB_NORETURN void xbt_throw_unimplemented(const char* file, int line, const char* func);
+#define THROW_UNIMPLEMENTED xbt_throw_unimplemented(__FILE__, __LINE__, __func__)
-/** @brief Exception destructor */
-void xbt_ex_free(xbt_ex_t e);
+/** Die because something impossible happened
+ * @ingroup XBT_ex_c
+ */
+#define DIE_IMPOSSIBLE xbt_die("The Impossible Did Happen (yet again)")
-void xbt_ex_display(xbt_ex_t *e);
+SG_END_DECL()
-/** @} */
-#endif /* __XBT_EX_H__ */
-
+/** @} */
+#endif /* __XBT_EX_H__ */
